A file is true to scale when it carries the real measurements of the original, so it can be printed, plotted or projected without any conversion.
PatternScan Pro exports in millimetres. The quickest way to check is to measure a known distance on the original and compare it with the same distance in the file.

Digitize sewing patterns without tracing.
Test PatternScan Pro free for 14 days with the full feature set. You need your smartphone, a printer and one pattern you always wanted digital.